On a 99 vw beetle i cant push the rear disc piston in
On the 99 vw beetle im trying to replace the rear brakes but cant. The e-brake is tied in with the rear brakes. I tried to push the piston with a c-clap but it wont push in. I think something in the e-brake system needs to be released to be able to push the piston in but i dont know what.
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The fronts compress with a C clamp. The rears have to be turned in with a caliper retraction tool. In both cases, be sure to remove the brake reservoir cap before resetting the calipers, and put it back on before touching the brake pedal. Pump the brakes to get pressure before taking your first drive.
It needs to be twisted clockwise while being pushed in. It's best to get a rear brake caliper tool that does this easily. If you want to save some money and fight with it, you can try turning the piston with channel locks while pushing it in, but be careful not to damage the boot.
When using the tool, it helps if you spray the boot with brake cleaner. This lubes the boot a little so it slides rather than bunching up and tearing.
Also make sure to take the cap off of the master cylinder resevoir so that the fluid has somewhere to go as you push the piston in.
you need a special tool avalable at most parts stores. its a disc brake piston turning tool. you have to rotate piston clockwise while pushing in on piston. you can fabricate something that enguages the slots and push and turn till all the way in.make sure to note position of slots and put them in same place as was before or the pin on the pads wont enguage the slot
You will need to check to see if your VW has anti-lock brakes installed on it. The pistons that push in usually look like an inverted cup, hollow end facing the brake pads. The pistons with antilock brakes are usually solid across the top facing the brake pads and will need to be rotated in order for them to collapse back inwards. Some rotate easily, others are a bit more difficult. The pistons on my VW Beetle have two (2) angular grooves opposite one another. If your look like this you may be able to use the blunt end of some needle-nose pliars, or you can head over to your local auto parts retailer for a "magic box", a square cube with as many as five (5) different patterns for the buttons that insert into the angular grooves on different vehcles. Find the pattern that best fits your grooves and attache the magic box to a 3/8 rachet with an extension. Rotate the piston slowley in one direction, then the other to loosen it up. To collapse the piston I believe you will need to rotate counter clockwise. Good luck, this style piston is only on the rear wheels.
When I changed my sisters VW Jetta I used the follow:
Socket to fit the caliper bolts (can't remember size)
C-Clamp to push the piston back in
Bucket to set the caliper on while changing the pads
On the rear brakes I had to borrow the special tool to push in rear disc brakes from AutoZone, this tool spins the piston while pushing it back in. Let me know if you have any other questions. Thanks for an honest rating and thanks for using FixYa!
disc or drum rear brakes? If dis, make shure seal Hasn'r rolled and lubricate the bore and piston liberally with brake fluid and be sure bleeder is open, Frum brakes same.make sure cup is iserted with flat towards oiston, open bleeder if a two piston cylinder befor yrying to compress. Good luck On disc brake piston make sure it is clean as clean can get and rotate piston using even pressure to get over the seal.
On cars with 4 wheel disc brakes the rear calipers are what they call racheting.The pison needs to be turned clockwise at the same time you are pushing in.This mechanisum is for the E brake system.They make special tools for doing this that you can pick up at your local parts store.